So -> Because/As/Since -> Because of

1.Because of the bad weather ,we postponed the inic yesterday.

2.As it rained heavily,they didn't go for a picnic.

3.Since I love my city,I will work there.

4.We didn't  go out for a walk because of the snowing weather.

5.It is a national holiday today,so you won't find maby shops open.

6.He was sick yesterday,so he didn't go to school.

                                             Chúc Bợn Học Tốt !!!